not directly about Writing Fight Scenes: knife fights?

xahra99 asked this in comments to the last "writing fight scenes" post, and I couldn't remember very well, so I put it to you all here:

What films and/or online videos would you say show relatively accurate knife fights?

I know I've seen some that looked good, but none of them are coming to mind right now. I figured it was more efficient to ask the Great Internet Overmind, rather than staring at the wall trying to prod my own memory into working. (It always makes me think of that line from Hamlet: "Cudgel thy brain no more, for your dull ass will not mend his pace with beating.")